Azarafza, M., M. Azarafza, and H. Akgün. “Clustering Method for Spread Pattern Analysis of Corona-Virus (COVID-19) Infection in Iran ”. Journal of Applied Science, Engineering, Technology, and Education, Vol. 3, no. 1, Feb. 2021, pp. 1-6, doi:10.35877/454RI.asci31109.